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Malicious hackers are targeting people in the cryptocurrency space in attacks that start with a link added to the target’s calendar at Calendly, a popular application for scheduling appointments and meetings. The attackers impersonate established cryptocurrency investors and ask to schedule a video conference call. But clicking the meeting link provided by the scammers prompts the user to run a script that quietly installs malware on macOS systems.
KrebsOnSecurity recently heard from a reader who works at a startup that is seeking investment for building a new blockchain platform for the Web. The reader spoke on condition that their name not be used in this story, so for the sake of simplicity we’ll call him Doug.
Being in the cryptocurrency scene, Doug is also active on the instant messenger platform Telegram. Earlier this month, Doug was approached by someone on Telegram whose profile name, image and description said they were Ian Lee, from Signum Capital, a well-established investment firm based in Singapore. The profile also linked to Mr. Lee’s Twitter/X account, which features the same profile image.
The investor expressed interest in financially supporting Doug’s startup, and asked if Doug could find time for a video call to discuss investment prospects. Sure, Doug said, here’s my Calendly profile, book a time and we’ll do it then.
When the day and time of the scheduled meeting with Mr. Lee arrived, Doug clicked the meeting link in his calendar but nothing happened. Doug then messaged the Mr. Lee account on Telegram, who said there was some kind of technology issue with the video platform, and that their IT people suggested using a different meeting link.
Doug clicked the new link, but instead of opening up a videoconference app, a message appeared on his Mac saying the video service was experiencing technical difficulties.
“Some of our users are facing issues with our service,” the message read. “We are actively working on fixing these problems. Please refer to this script as a temporary solution.”
Doug said he ran the script, but nothing appeared to happen after that, and the videoconference application still wouldn’t start. Mr. Lee apologized for the inconvenience and said they would have to reschedule their meeting, but he never responded to any of Doug’s follow-up messages.
It didn’t dawn on Doug until days later that the missed meeting with Mr. Lee might have been a malware attack. Going back to his Telegram client to revisit the conversation, Doug discovered his potential investor had deleted the meeting link and other bits of conversation from their shared chat history.
In a post to its Twitter/X account last month, Signum Capital warned that a fake profile pretending to be their employee Mr. Lee was trying to scam people on Telegram.
The file that Doug ran is a simple Apple Script (file extension “.scpt”) that downloads and executes a malicious trojan made to run on macOS systems. Unfortunately for us, Doug freaked out after deciding he’d been tricked — backing up his important documents, changing his passwords, and then reinstalling macOS on his computer. While this a perfectly sane response, it means we don’t have the actual malware that was pushed to his Mac by the script.
But Doug does still have a copy of the malicious script that was downloaded from clicking the meeting link (the online host serving that link is now offline). A search in Google for a string of text from that script turns up a December 2023 blog post from cryptocurrency security firm SlowMist about phishing attacks on Telegram from North Korean state-sponsored hackers.
“When the project team clicks the link, they encounter a region access restriction,” SlowMist wrote. “At this point, the North Korean hackers coax the team into downloading and running a ‘location-modifying’ malicious script. Once the project team complies, their computer comes under the control of the hackers, leading to the theft of funds.”
Image: SlowMist.
SlowMist says the North Korean phishing scams used the “Add Custom Link” feature of the Calendly meeting scheduling system on event pages to insert malicious links and initiate phishing attacks.
“Since Calendly integrates well with the daily work routines of most project teams, these malicious links do not easily raise suspicion,” the blog post explains. “Consequently, the project teams may inadvertently click on these malicious links, download, and execute malicious code.”
SlowMist said the malware downloaded by the malicious link in their case comes from a North Korean hacking group dubbed “BlueNoroff, which Kaspersky Labs says is a subgroup of the Lazarus hacking group.
“A financially motivated threat actor closely connected with Lazarus that targets banks, casinos, fin-tech companies, POST software and cryptocurrency businesses, and ATMs,” Kaspersky wrote of BlueNoroff in Dec. 2023.
The North Korean regime is known to use stolen cryptocurrencies to fund its military and other state projects. A recent report from Recorded Future finds the Lazarus Group has stolen approximately $3 billion in cryptocurrency over the past six years.
While there is still far more malware out there today targeting Microsoft Windows PCs, the prevalence of information-stealing trojans aimed at macOS users is growing at a steady clip. MacOS computers include X-Protect, Apple’s built-in antivirus technology. But experts say attackers are constantly changing the appearance and behavior of their malware to evade X-Protect.
“Recent updates to macOS’s XProtect signature database indicate that Apple are aware of the problem, but early 2024 has already seen a number of stealer families evade known signatures,” security firm SentinelOne wrote in January.
According to Chris Ueland from the threat hunting platform Hunt.io, the Internet address of the fake meeting website Doug was tricked into visiting (104.168.163,149) hosts or very recently hosted about 75 different domain names, many of which invoke words associated with videoconferencing or cryptocurrency. Those domains indicate this North Korean hacking group is hiding behind a number of phony crypto firms, like the six-month-old website for Cryptowave Capital (cryptowave[.]capital).
In a statement shared with KrebsOnSecurity, Calendly said it was aware of these types of social engineering attacks by cryptocurrency hackers.
“To help prevent these kinds of attacks, our security team and partners have implemented a service to automatically detect fraud and impersonations that could lead to social engineering,” the company said. “We are also actively scanning content for all our customers to catch these types of malicious links and to prevent hackers earlier on. Additionally, we intend to add an interstitial page warning users before they’re redirected away from Calendly to other websites. Along with the steps we’ve taken, we recommend users stay vigilant by keeping their software secure with running the latest updates and verifying suspicious links through tools like VirusTotal to alert them of possible malware. We are continuously strengthening the cybersecurity of our platform to protect our customers.”
The increasing frequency of new Mac malware is a good reminder that Mac users should not depend on security software and tools to flag malicious files, which are frequently bundled with or disguised as legitimate software.
As KrebsOnSecurity has advised Windows users for years, a good rule of safety to live by is this: If you didn’t go looking for it, don’t install it. Following this mantra heads off a great deal of malware attacks, regardless of the platform used. When you do decide to install a piece of software, make sure you are downloading it from the original source, and then keep it updated with any new security fixes.
On that last front, I’ve found it’s a good idea not to wait until the last minute to configure my system before joining a scheduled videoconference call. Even if the call uses software that is already on my computer, it is often the case that software updates are required before the program can be used, and I’m one of those weird people who likes to review any changes to the software maker’s privacy policies or user agreements before choosing to install updates.
Most of all, verify new contacts from strangers before accepting anything from them. In this case, had Doug simply messaged Mr. Lee’s real account on Twitter/X or contacted Signum Capital directly, he would discovered that the real Mr. Lee never asked for a meeting.
If you’re approached in a similar scheme, the response from the would-be victim documented in the SlowMist blog post is probably the best.
Image: SlowMist.
Update: Added comment from Calendly.
Cisco is honored to be this year’s winner of the Best Next Generation Firewall Award in the SE Labs 2023 Annual Report. This industry recognition validates Cisco’s continuous push towards harmonizing network, workload, and application security across hybrid and multicloud environments. I’m incredibly proud of the Cisco Secure Firewall team and am thankful for our amazing customers who continue to trust Cisco and develop their network security around our capabilities.
SE Labs, a cybersecurity testing and evaluation firm, provides impartial and independent assessments of various cybersecurity products and solutions. In their 2023 Annual Report, SE Labs states:
“Our Annual Security Awards recognizes security vendors that notonly do well in our tests, but perform well in the real world withreal customers. These awards are the only in the industry thatrecognize strong lab work combined with practical success.”
SE Labs performs tests on behalf of customers seeking independent proof-of-value assistance, as well as security vendors. At Cisco, we use third-party evaluations from multiple sources, including SE Labs, to augment our internal testing and to drive product improvement.
Winners were determined after months of in-depth testing, based on a combination of continual public testing, private assessments and feedback from corporate clients who use SE Labs to help choose security products and services. The award further validates that our customers can expect superior threat protection and performance with Cisco Secure Firewall.
SE Labs’ reports use the MITRE ATT&CK framework, employing both common “commodity” malware samples and sophisticated, targeted attacks. Their network security testing uses full attack chains to assess the detection and protection abilities of network devices and combinations of network and endpoint solutions. SE Labs publishes its testing methodologies and is BS EN ISO 9001: 2015 certified for The Provision of IT Security Product Testing.
As a worldwide leader in networking and security, Cisco is better positioned than any other security vendor to incorporate effective firewall controls into our customers’ infrastructure — anywhere data and applications reside. We offer a comprehensive threat defense with industry-leading Snort 3 IPS to protect users, applications, and data from continuously evolving threats. Our solutions also leverage machine learning and advanced threat intelligence from Cisco Talos, one of the world’s largest commercial threat intelligence teams.
In the constantly evolving world of cybersecurity, it is important to have access to the latest and most advanced technologies to stay ahead of threats. Whether you are an enterprise, government, healthcare, or a service provider organization, Cisco Secure Firewall provides top-ranked security.
When you invest in Cisco Secure Firewall, you are investing in award-winning threat defense with capabilities that are built for the real world. Learn more about SE Labs 2023 Annual Report, Cisco Secure Firewall and how you can refresh your firewall.
We’d love to hear what you think. Ask a Question, Comment Below, and Stay Connected with Cisco Secure on social!
Cisco Secure Social Channels
Written by James Schmidt
Editor’s Note: We often speak of online scams in our blogs, ones that cost victims hundreds if not thousands of dollars. This account puts a face on one of those scams—along with the personal, financial, and emotional pain that they can leave in their wake. This is the story of “Meredith,” whose aunt “Leslie” fell victim to an emerging form on online elder fraud. Our thanks to James for bringing it forward and to “Meredith’s” family for sharing it, all so others can prevent such scams from happening to them.
“Embarrassing. Simply embarrassing.” She shook her head. “It’s too raw. I can’t talk about it right now. I need time.”
Her aunt had been scammed. To the tune of $100,000 dollars. My colleague—we both work in the security industry—felt a peculiar sense of loss.
“I work in this industry. I thought I’d done everything right. I’ve passed on enough warnings to my family and friends to ensure they’d avoid the fate of the scammed. Simply because I’m in this industry does not imply my circle is always aware of all the threats to them, even if I do my best to teach them.”
“My mental state, recently, borders on shame; this feeling, you know? How could someone working in my industry have something like this happen to a family member?”
I told her many people working in other industries cannot control what happens to people in their families even if people in that industry had knowledge that could have helped them or otherwise avoided a problem altogether.
“I know, but this simply should never have happened! My aunt is one of the smartest, most conscientious people I know, and she fell for this. It’s crazy and I can’t wrap my head around it.”
My colleague, let’s call her Meredith (not her real name as she’s a bit ashamed to know this happened to a family member), told me the beginnings.
Let’s call her aunt Leslie.
Her story unfolds, the overall picture a pastiche of millions of people in the United States today. Her aunt is retired, bored, lonely, and isolated. She feels adrift without something to occupy her time; she was looking for companionship, connections, someone (anyone) to talk to. Her feelings intensified during the pandemic. She morphed into perfect prey for scammers of what is now known as the “Pig Butchering Scam.”
The term “Pig Butchering” has a visceral and raw feel to it, which falls right in line with how brutal this scam can be. It’s a long con game, where the scammer befriends the victim and encourages them to make small investments through the scammer, which get bigger and bigger over time. The scammer builds trust early with what appear to be small investment wins. None of it is legit. The money goes right into the scammer’s pocket, even as the scammer shows the victim phony financial statements and dashboards to show off the bogus returns. Confidence grows. The scammer wrings even larger sums out of the victim. And then disappears.
It was a targeted attack that started innocuously enough with a “fake wrong number”. An SMS arrives. A text conversation starts. The scammer then apologizes but tells Leslie someone gave them the number to initiate the text.
The scammer then uses emotional and psychological techniques to keep Leslie hooked. “How are you, are you having a nice day?” Leslie, being bored and interested, engages willingly.
The scammer asks to talk directly, not via text: and a phone conversation ensues. The scammer proceeds to describe—in very soothing detail—what they are doing, helping people, like Leslie, invest their “hard-earned money” into something that will make them more money, to help them out in retirement.
Of course, it is too good to be true.
“The craziest part of all of this is my aunt refuses—to this day—to believe she’s been scammed!”
She still thinks this scammer is a “friend” even though the entire family is up in arms over this, all of whom beg her aunt to “open her eyes.”
“My aunt still thinks she’d going to see that money again, or even make some money, which is crazy. The scammers are so good at emotional intelligence; really leveraging heartstrings and psychological makeup of the forlorn in society. My aunt finally agreed to stop sending more money to the scammers, but only after the entire family threatened to cut her off from the rest of the family. It took a lot to get her to stop trusting the scammers.”
Meredith feels this is doubly sad as the aunt in question is not someone they’d ever imagine would in this predicament. She was always the upright one, always the diligent and hardworking and the best with money. She is smart and savvy and we could never imagine her to be taken by these people and taken so easily. It boggles the mind.”
She did start to change in the last few years. And the pandemic created a weird situation. Retirement, loneliness from loss of a partner, and the added burden of the pandemic created a perfect storm for her to open herself up to someone willingly, simply for the sake of connection.
“No one deserves this. It has rocked my family to the core. It is not only about the money, but we’ve found family bonds stretched. She believes these random people, these scammers, more than she believes her own family. Have we been neglectful of our aunt? Does she no longer put her faith in people she knows, rather gives money to complete strangers?”
Being a security professional does not provide magical protection. We are more aware of scams and scammers, and how they work, and what to look for, and we try to do all we can to keep our family aware of scams out there in the big wide world, but we are human. We fall short.
Diligence is action. Awareness is action. Education is action.
We need to be better, all of us, at socializing risky things. We need to consistently educate our family and friends to protect themselves, not only via security software (which everyone should have as default) but by providing tips and tricks and warnings for things we all need to be on the lookout. This is not a one-time thing. The cliché holds true: “If you see something say something.” Repetition helps.
In today’s world, the need for protecting people’s security, identity, and privacy is critical to keeping them safe. Scammers long stopped focusing on attacking only your computer. Now focus more than ever on YOU: your identity, your privacy, your trust. If they get you there, they soon get your money.
As for contributing factors to scammers success with their victims, such as loneliness, isolation, and boredom, they all have remedies. Make connections with your loved ones, especially those easily tagged as vulnerable, those you feel might be at risk. Reach out. It may be hard sometimes due to distance and other factors but make it a point to connect. There is a reason these scammers are succeeding. They are stepping into roles of companions to people who are desperate for connection.
Most people are greatly saddened at seeing other people being “taken.” Let’s work together to help stop the scammers.
Look out for each other, and get your people protected!
Editor’s Closing Note:
If you or someone you know suspects elder fraud, the following resources can help:
For further reading on scams and scam prevention, check out the guides in our McAfee Safety Series, which provide in-depth advice on protecting your identity and privacy—and your family from scams. They’re ready to download and share.
The post A Scam in the Family—How a Close Relative Lost $100,000 to an Elder Scam appeared first on McAfee Blog.
It’s common practice to pull down the window shades at night. Homeowners invest in high fences. You may even cover the PIN pad when you type in your secret four-digit code at ATMs. Privacy is key to going about your daily life comfortably in your surroundings. Why shouldn’t privacy also extend to your digital surroundings?
This Data Privacy Day, round out your privacy protection toolbox with McAfee’s help so you can live your best online life safely.
An easy way to instantly boost the privacy of your every online move is to always connect to a virtual private network (VPN). A VPN scrambles your connected device’s internet session, meaning that it’s impossible for a cybercriminal to eavesdrop on your online comings and goings. VPNs are especially crucial for when you connect to public Wi-Fi networks or networks for which you cannot vouch for their security. Cybercriminals often lurk on public Wi-Fi networks at hotels, coffee shops, and libraries and pounce on users who connect their devices without the protection of a VPN.
Digital privacy not only implies remaining hidden from nefarious eyes, but also from the prying eyes of pesky advertisers. A VPN can assist with that too! When you have a VPN enabled, it confuses advertisers and targeted ads. The less information they have, the more privately you can surf online.
To improve your online privacy, it’s important to first know how safe you currently are. When you can identify your weakest digital privacy habits, you can make targeted improvements to them. Luckily, McAfee Protection Score can help you do just that! Protection Score is a helpful privacy tool that rates your current digital safety. Then, based on your score, the tool offers suggestions on how to boost your score.
For instance, Protection Score searches for your personally identifiable information (PII) on the dark web. If it finds a copy of your government ID or your financial records on a dubious site, your score will tank. While it may be alarming to have a low Protection Score, you can feel good that you’re making positive waves, hopefully before a cybercriminal takes advantage of your PII and uses it to steal your identity.
There are several easy ways to boost your score that require very little effort but have a huge payoff. Connecting to a VPN and running an antivirus scan on your device are just two things you can do and each only takes a few seconds. Changing your habits and turning your online safety around doesn’t have to be overwhelming! In some cases, there are services that’ll even do the work for you, like the service we’ll talk about next.
To round out your privacy protection toolbox, consider signing up for McAfee Personal Data Cleanup. This service is a great companion to Protection Score. While Protection Score identifies all the areas where you can improve your security, Personal Data Cleanup is a service that will remove your information from the web’s riskiest sites.
Did you know that, on average, a person has their PII for sale on 31 sites? Plus, 95% of people haven’t even given their permission and have their personal information for sale on data brokerage sites. Data brokerage sites are legal and anyone can buy your information. Online advertisers are the usual clients, but a cybercriminal can jump in and buy valuable PII, as well.
You should care about data privacy every day not just when the calendar reminds you on Data Privacy Day. Take the steps and invest in the right solutions to shore up your online defenses. McAfee+ Ultimate is an all-in-one service that includes unlimited VPN, Protection Score, a full-service Personal Data Cleanup, and 13 other high-quality identity, privacy, and device security tools.
Live your online life more confidently with McAfee, knowing that cybercriminals are less likely to slip by and damage your credit, identity, or online reputation.
The post 3 Tools to Round Out Your Privacy Protection Toolbox appeared first on McAfee Blog.
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